kubeadm docker flannel integration

Before kubeadm I use these steps to take flannel ip & mtu value to docker.

Step 1: stop Docker and Flannel
Step 2: start Flannel and check its status;
step 3: update Docker startup script like this

source /run/flannel/subnet.env
--bip=${FLANNEL_SUBNET} --mtu=${FLANNEL_MTU} 

Step 4: start Docker and check its status.

How this steps done with kubeadm? I see Docker deamon process start first then Flannel starts as container trying to understate the integration process.

Thanks SR